Cushion for molding machines



\ 1932 w. LEWIS CUSHION FOR MOLDING MACHINES Filed y 51, 1929 2 4 m w M k A v, SW W W @ufihu W... duh U. W [la 1.. ||l!-|wm w 5 Z1 4 Patented Aug. 2, 1932 ITED STATES PATENT OFFICE WILFRED LEWIS, OF HAVERFORD, PENNSYLVANIA, ASSIGNOR TO THE TAIBOR MANU- FACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA CUSHION FOR MOLDING MACHINES Application filed May 31, 1929. Serial No. 367,248.

The principal object of the present invention is to provide a steel cushion for jarring machines as a substitute for cork or other material to soften the blow and hasten the rebound.

Cushions embodying the invention are steel plates of enormous strength and stiffness and they are resilient and durable. They are preferably steel castings designed to yield under heavy load and take a permanent set rather than break.

Other objects of the invention will appear from the following description at the end of which the invention will be claimed.

In the following description reference will be made to the accompanying drawing forming part hereof and illustrating partly in elevation and partly in section portions of a molding machine fitted with a cushion embodying features of the invention.

Referring to the drawing, the cushion comprises a disk marginally flanged on each of its faces as at 1 and 2 and centrally perforated as at 8. Between the faces of the disk there is an annular groove 4 extending toward the center of the disk and providing a relatively small centrally dis-posed cylindrical hub or small cylinder 5.

In association with the relatively fixed and movable elements 6 and 7, the marginal flanges 1 and 2 are arranged, the flange 1 to rest upon the element 6, and the flange 2 to receive the element 7 when the latter is in motion and to support the element"? when the latter is at rest.

Obviously 1 and 2 can be separate disks with short hubs in contact at 5 or one of such disks can be used on light machines instead of two, while for heavy service the double flanged disk can be multiplied indefinitely.

I claim:

1. A cushion for jar molding machines comprising a flat steel disk provided on each of its faces with a marginal flange and having between its faces an annular groove extending toward its center and providing a relatively small centrally disposed hub.

2. A cushion for ar molding machines comprising a flat steel disk having marginal flanges on its faces and a central portion of U-shaped vertical cross section; whereof the central portion forms a hub and the side portions are flat in normal position.

3. In a molding machine the combination consisting of a movable piston, a stationary cylinder for receiving said piston and having a projection theron, and a cushion comprising a relatively flat steel disk having a perforation therein to receive said pro ection and having a hub surrounding said perforation on one face and having at its edge and on its other face a flange.

WILFRED LEWIS. 

